© 2017

High-Fidelity Quantum Logic in Ca+

  • Nominated as an outstanding PhD thesis by the University of Oxford, UK

  • Provides a comprehensive study of the errors in a trapped-ion two-qubit gate

  • Demonstrates a mixed-species entangling gate


Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xvi
  2. Christopher J. Ballance
    Pages 1-4
  3. Christopher J. Ballance
    Pages 5-14
  4. Christopher J. Ballance
    Pages 15-25
  5. Dr.Christopher J. Ballance
    Pages 27-45
  6. Christopher J. Ballance
    Pages 47-63
  7. Christopher J. Ballance
    Pages 65-85
  8. Christopher J. Ballance
    Pages 87-96
  9. Christopher J. Ballance
    Pages 97-119
  10. Christopher J. Ballance
    Pages 121-127
  11. Back Matter
    Pages 129-141

About this book


This thesis describes experimental work in the field of trapped-ion quantum computation. It outlines the theory of Raman interactions, examines the various sources of error in two-qubit gates, and describes in detail experimental explorations of the sources of infidelity in implementations of single- and two-qubit gates. Lastly, it presents an experimental demonstration of a mixed-species entangling gate.


Trapped-Ion Quantum Computing Two-Qubit Phase Gate Entangling Gate High Fidelity Quantum Information Processing Quantum Error Correction Mixed-species Gate Mechanism Calcium Ion Qubit

Authors and affiliations

  1. 1.Department of PhysicsUniversity of OxfordOxfordUnited Kingdom

About the authors

Chris Ballance received an MPhys in Physics from Somerville College, Oxford in 2010. He completed his DPhil at Hertford College, Oxford. In 2015 he joined Magdalen College as a Fellow by Examination. His work focusses on using trapped atomic ions to develop the building blocks of a quantum computer.

Bibliographic information